Question

why should we avoid standing close to a tuberculosis patient while she is coughing

Answer 1

while coughing, the spit carrying bacteria of tuberculosis can enter our body and make us sick

Answer 2

We should avoid standing close to a tuberculosis patient as when the person coughs the germs would spread in the air in droplets and if we breathe the same air we would also get infected by tuberculosis.

HOPE THIS HELPS!